We appreciate your privacy and don't require registration. We believe in a hasslefree approach. You buy → you receive a link. That's it. Your ecard is ready in 10 seconds.
Unlimited people can sign the group ecards. The signatures can be as long as a single page can fit. If that's not enough for you, feel free to sign multiple times!
The receiver won't see any empty pages (unless it's the backside of an existing page).